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Customer Concentrations and Foreign Sales - Schedule of Customer Concentrations and Foreign Sales (Details) - USD ($)	3 Months Ended		9 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2021	Nov. 30, 2020
Total sales	$ 3,431,000	$ 2,662,000	$ 8,365,000	$ 6,660,000
Asia Pacific (APAC)
Total sales	1,901,000	1,039,000	4,754,000	3,416,000
Europe, Middle East, Asia (EMEA)
Total sales	1,287,000	1,216,000	2,723,000	2,414,000
Latin America
Total sales	$ 243,000	$ 407,000	$ 888,000	$ 830,000

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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